Date: Thu, 30 May 1996 15:31:26 +0100 From: robmel@nadt.org.uk (Robin Melville) To: questions@freebsd.org Cc: croot@btp1da.phy.uni-bayreuth.de, mikes@nickel.ucs.indiana.edu Subject: Re: Excessive interrupts question Message-ID: <v01530501add360498bbb@[194.155.224.204]>
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>> I have 2.1 running on a Hewlett Packard NetServer with a NE2000 clone ether >> card and HP-doctored Adaptech 7770 on-board scsi with one 2Gb disk. >> >> It runs ok but very sluggishly. Checking with xperfmon++ I discover that >> something's generating 20k+ interrupts per second. Can anyone suggest what >> I should do to solve this? > >Try "vmstat -i" to identify the interrupt source > >Werner >I'd immediately suspect the NE2000. This is a well-known CPU hog in >Novell servers. > >[ Michael ] vmstat -i shows: interrupt total rate clk0 irq0 95305809 99 rtc0 irq8 104534 0 fdc0 irq6 1 0 ahc1 irq11 9696467 10 sc0 irq1 5 0 sio0 irq4 2 0 sio1 irq3 2 0 ed1 irq5 7469608 7 Total 112576428 118 This is a different picture from that supplied by xperfmon (?). Are these interrupts excessive? Thanx again .... Robin. ----------------------------------------------- Robin Melville, Addiction Information Service Nottingham Alcohol & Drug Team Vox +44 (0)115 952 9478 Fax +44 (0)115 952 9421 Email: robmel@nadt.org.uk WWW: http://www.innotts.co.uk/suba/ -----------------------------------------------
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